I'm sure the goal here is that, by the end of 30 days if you have played your character to a high enough level you will feel you have too much of an investment in it to have it deleted. And, to be fair, if you have played the game for 30 days even with the restrictions, it is probably a game you enjoy and one that would be worth your money.

On the other hand, if you play your character, think you might like the game, bt decide not to subscribe right now, when that character is deleted you have that much less of an incentive to come back to the game at a later date.

I'm interested in seeing how this method works out for them.